I think the author is conflating two issues here 1 A sense that he does not finish things 2 That he should be further along in life The second is nonsense as

I think the author is conflating two issues here 1 A sense that he does not finish things 2 That he should be further along in life The second is nonsense as there is no set point where anyone should 'be' in life. Some contribute early, some late, some after they are dead! The first is a real problem, one I've struggled with. The way I've attempted to overcome it is, when I got my next idea I wanted to try out I told myself the goal wasn't to be successful, rather it was to finish. I wanted to see something done and launched no matter how terrible I felt it was. I found that overcoming the initial abandonment period required two things 1 a partner 2 skin in the game With your next great idea, I'd advise you prioritize finishing it and invest in the above two points to get you there.